How We Research
Updated: 2026-09-24 · 7 min read · Independent comparison
If you want one adapter that turns a single USB-C port into both a 60W PD charging passthrough and a wired 3.5mm headphone jack so you can fast charge headphones and phone audio at the same time, choose JSAUX USB C; if you need a dongle that splits one USB-C port into a dedicated USB-C charging port plus a USB-C audio port with broad fast-charging protocol support for newer phones and laptops, choose AILKIN Dual USB C.
• JSAUX USB C — biggest strength: a 2-in-1 USB-C to 3.5mm adapter with up to 60W PD charging, an advanced DAC chip for low-power, stable decoding, and CTIA/OMTP support, so music, calls and volume control keep working while you fast charge. Its trade-off: it feeds a 3.5mm analog jack, not a USB-C audio device, and JSAUX notes it may not support QC on some phones and is not compatible with all OnePlus and Pixel models.
• AILKIN Dual USB C — biggest strength: a 2-in-1 splitter that gives you a dedicated charging port and a dedicated audio port, up to 60W PD with a built-in smart chip, and compatibility with PD, QC, AFC and PPS fast-charging protocols. Its trade-off: it splits to a USB-C audio path, external USB-C to 3.5mm adapters are not supported, and data transfer is not supported.
• Who JSAUX USB C is for: anyone who still lives on wired 3.5mm headphones or earbuds and wants to charge and listen from one USB-C port.
• Who AILKIN Dual USB C is for: anyone whose headphones, earbuds or audio gear already use a USB-C plug, or who wants the widest fast-charging protocol coverage across phones and laptops.
The JSAUX USB C adapter is built around a very specific problem: your phone or tablet has one USB-C port, you want to plug in wired 3.5mm headphones, and you also want to keep charging. It solves that in a single body — a 2-in-1 USB-C to 3.5mm audio adapter that supports music playback, calling and volume control while fast charging at up to 60W PD. JSAUX recommends pairing it with a PD wall charger for the fastest speed, and notes it may not support QC on some phones. So the cleanest setup is a PD charger, not a random QC brick.
The audio side is where the design detail matters. Inside is an advanced DAC chip that converts digital audio to analog with low power consumption and stable decoding, which is the part that keeps hiss and dropouts down when you're charging and listening at the same time. It supports both CTIA and OMTP headset standards, so in-line controls and mic functions on a wider range of wired headsets have a better chance of working. There's no software, no driver, no setup — plug and play. The shell is aluminium alloy, described as wear-resistant and durable, and the adapter comes in white.
Compatibility is broad but not universal. JSAUX lists iPhone 15/15 Pro/15 Plus/15 Pro Max, Samsung S24/S23/S22/S21/S20 series plus S10/S10+/Note10, iPad Pro, Huawei P40/P30 Pro/P20 and MatePad Pro, LG and more. The one caveat worth repeating: it is not compatible with all models of OnePlus and Pixel, and there's no data transfer.
Buy it if you want to fast charge headphones the old-school way — a 3.5mm plug in your ear, a PD charger in the wall, both running through one small adapter. Skip it if your headphones are USB-C, or you're on a OnePlus or Pixel model JSAUX doesn't cover.
AILKIN's take on the same problem is a splitter rather than a converter. This dual USB-C dongle takes one USB-C port and splits it into a dedicated charging port and a dedicated audio port, so charging and listening don't compete for the same path. Charging runs at up to 60W PD through a built-in smart chip, and — this is the standout spec — it's compatible with PD, QC, AFC and PPS fast-charging protocols, automatically adjusting voltage and current to match what your device asks for. If your phone or laptop is fussy about which fast-charge standard it negotiates, that protocol list is the reason to look here.
The audio side is USB-C, not 3.5mm. That's the single most important thing to understand before buying: AILKIN explicitly states that external USB-C to 3.5mm adapters are not supported. So this is for USB-C headphones, USB-C earbuds, or USB-C audio gear — not for your old 3.5mm wired pair, unless you're plugging into a device that already handles that conversion itself. Audio is plug and play, no drivers or apps, and the dongle is lightweight enough to live in a backpack or handbag.
Compatibility is genuinely wide: iPhone 17/17 Pro Max/Air/17 Pro/16 series/15 series, a long Samsung Galaxy list including S26/S25/S24+/S23/S22/S21/S20, Note 20, A-series and Z Flip 7/Z Fold 7, Google Pixel 10/10 Pro XL/9 Pro/9/8/7a/6/5/4xl, MacBook Pro/Air and iPad Pro/Air. Data transfer is not supported. The unit ships in purple, with a 1-year warranty and 7x24 customer service.
Side-by-Side: Which Should You Choose?
• Best for 3.5mm wired headphones → JSAUX USB C. It has the actual 3.5mm jack, plus CTIA/OMTP support for in-line controls and mic.
• Best for USB-C headphones and earbuds → AILKIN Dual USB C. It gives you a dedicated USB-C audio port with no 3.5mm conversion in the way.
• Best for fast-charging protocol flexibility → AILKIN Dual USB C. PD, QC, AFC and PPS coverage with automatic voltage and current adjustment is the wider net.
• Best for straightforward PD charging → JSAUX USB C. Up to 60W PD, with JSAUX recommending a PD wall charger and flagging that QC may not work on some phones.
• Best for listening while charging on a budget of ports → AILKIN Dual USB C. Splitting into two separate ports means charging and audio aren't sharing one path.
• Best for older Android and Huawei devices → JSAUX USB C. It lists S10/S10+/Note10, Huawei P40/P30 Pro/P20, MatePad Pro and LG, which matters if you're on an older handset.
• Best for current iPhone, Pixel and MacBook owners → AILKIN Dual USB C. The compatibility list reaches iPhone 17, Pixel 10 and MacBook Pro/Air.
• Watch out either way → neither adapter supports data transfer, and both top out at 60W PD.
In my opinion, the deciding question isn't which dongle is better — it's what's on the end of your cable. If you're plugging in 3.5mm wired headphones and want to fast charge headphones and phone at the same time, I'd buy the JSAUX USB C. It's the one with the real headphone jack, the DAC chip doing the conversion, and CTIA/OMTP support for your in-line controls. If your headphones are already USB-C, or you want the broader fast-charging protocol list across modern phones and laptops, I'd buy the AILKIN Dual USB C instead. Match the adapter to your plug and you'll be happy either way.
FAQ
how to charge headphones faster
how to charge headphones
For wired listening while charging, plug a PD charger into the adapter's charging port and your headphones into the audio port. On the JSAUX that audio port is 3.5mm; on the AILKIN it's USB-C. Both are plug and play with no drivers, and neither supports data transfer.
how to fast charge bose headphones
It depends on the plug. If your Bose headphones use a 3.5mm cable, the JSAUX USB C gives you that jack plus 60W PD charging at the same time. If they're USB-C, the AILKIN Dual USB C gives you a dedicated USB-C audio port alongside its 60W PD charging port.
is fast charging bad for headphones
Nothing in these data sheets suggests a problem — both adapters manage power with dedicated chips (JSAUX's DAC chip for low power consumption and stable decoding, AILKIN's smart chip for automatic voltage and current adjustment). The bigger practical limits are protocol support: JSAUX notes QC may not work on some phones, and both cap at 60W PD.
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See also: LUDOS OMNITONE USB C vs ASKUBSKU USB C Headphones, iJoy Headphones vs TZONOO USB C Headphones, Houbrera USB C Headphones vs YFSFQS 5: USB C Headphones